/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

package org.apache.skywalking.oap.server.storage.plugin.jdbc;

/**
 * SQLBuilder
 *
 * @author wusheng
 */
public class SQLBuilder {
    private static String LINE_END = System.lineSeparator();

    private StringBuilder text;

    public SQLBuilder() {
        this.text = new StringBuilder();
    }

    public SQLBuilder(String initLine) {
        this();
        this.appendLine(initLine);
    }

    public SQLBuilder append(String fragment) {
        text.append(fragment);
        return this;
    }

    public SQLBuilder appendLine(String line) {
        text.append(line).append(LINE_END);
        return this;
    }

    public String toStringInNewLine() {
        return LINE_END + toString();
    }

    @Override public String toString() {
        return text.toString();
    }
}
